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Faster room joins: fix race in recalculation of current room state (#13151)

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Bounce recalculation of current state to the correct event persister and
move recalculation of current state into the event persistence queue, to
avoid concurrent updates to a room's current state.

Also give recalculation of a room's current state a real stream
ordering.

Signed-off-by: Sean Quah <seanq@matrix.org>
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Sean Quah 2022-07-07 13:19:31 +01:00 • committed by GitHub
parent 2b5ab8e367
commit 1391a76cd2
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8 changed files with 214 additions and 55 deletions
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9
synapse/handlers/federation.py
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@ -1559,14 +1559,9 @@ class FederationHandler:
# all the events are updated, so we can update current state and
# clear the lazy-loading flag.
logger.info("Updating current state for %s", room_id)
# TODO(faster_joins): support workers
# TODO(faster_joins): notify workers in notify_room_un_partial_stated
# https://github.com/matrix-org/synapse/issues/12994
assert (
self._storage_controllers.persistence is not None
), "worker-mode deployments not currently supported here"
await self._storage_controllers.persistence.update_current_state(
room_id
)
await self.state_handler.update_current_state(room_id)
logger.info("Clearing partial-state flag for %s", room_id)
success = await self.store.clear_partial_state_room(room_id)